I got DD1 to take a bottle around 4 months by waiting till she was asleep in the bouncer for a while, heating the milk almost too warm, and then sitting behind the bouncer and sneaking it into her mouth. She started sucking without even knowing what she was doing. She didn't take much, but after that one success, it was a lot easier to get her to take a little from DH or someone else. We were using the Adiri bottles, but did a little better with the Playtex drop ins. She probably only took a bottle a half dozen times ever, since I was almost always with her, and probably 4 of those were just me making sure she would in case of emergency.